Description:Temperature Shift(Manual adjustment)Warm:45 (Red Light)Comfort:35 (White Light)Energy Saving:25 (Blue Light)USB Heat Vest Men Women Hiking Fishing Winter Heating Jacket with HatSpecification:Style: Sleeveless VestMaterial: Polyester,Down cottonColor: Black,Blue,GraySize: S/M/L/XL/2XL/3XL/4XL/5XLAge Of Application: AdultFever Area: BackPower Supply Interface: USBPower Supply: 5V/2A Mobile Power(Not Included)Function: Keep warm, Anti water splashing and Prevent cold,Windproof,AntistaticFeatures:This is a intelligence vest for you.With mobile power storge pocket, easy travel.1 minutes fast heat, dispel cold and keep you warm.Set the temperature you want to respond to a variety of environments.A button to heating, three stall temperature control, intelligent heating.It can be washed by machine and can be washed by hand. Do not wring it by hand.General USB interface power supply, longer service life,anti water splashing and washable.The fashion is warm, comfortable and breathable, and it’s a good partner for your winter going out.How To Use:1.Take out USB plug2.Plug in removable charger3.Switch on the removable charger4.Press the chest temperature control switch for two second5.Red light flashing,means heating automatic6.After red light flashes for 5 minutes,then automatic turn to white light,means medium temperature7.Manual adjustment has three level,red light means hign-temperature heating continuously.White light means medium heating continuously,blue light means low heating continuously8.Press the chest temperature control switch for two second,lights out and stop heatingNotes:1.If not used for a long time,please do not plug in removable charger2.Do not use high temperature water or strong acid detergent.3.Forbidden to use electricity for wet clothes,Please turn off the power and stop using if cloth is wet.4.Use time depending on the capacity of removable charge.5.Manual measuring, please allow 1 ~ 3 cm error,thank you.Package Included:1X Sleeveless Vest(Mobile Power Not Included)